Learn how to be your own tech line...

Click here to check out our structured, online appliance repair training courses for rookies and experienced techs.

FAQs | Repair Videos | Academy | Newsletter | Podcast | Contact

Stay connected with us...

Samurai on Facebook - become a fan today! Sign up for our free newsletter and keep up with all things Appliantology. Subscribe to our YouTube channel for lots of appliance repair tips and help! Follow the Samurai on Twitter and get timely morsels of Appliantological Wisdom! Subscribe to our MST Radio podcast to learn secrets of the trade.
  • Announcements

    • Samurai Appliance Repair Man

      Webinar Recordings Index Page   10/03/2017

      On-demand appliance repair training videos for Professional Appliantologist members Over 30 hours (and growing!) of original, high quality appliance training webinars developed and given by yours truly are at your fingertips, on topics you won't find anywhere else. Fill in those knowledge gaps, strengthen those areas of uncertainty, and boost your skills. Watch on mobile or desktop at your convenience whenever, wherever.  Ultra Short Primer on Basic Electricity, Circuits, Ohm's Law, and Schematic Reading (Length: 1:04:48) Basic Refrigerator Troubleshooting (Length: 1:10:45) Schematic Reading Workshop, 10/2015 (Length 1:19:08) Troubleshooting Strategies for Computer-Controlled Appliances (Length: 48:34) Semiconductors and PN Junctions (Length: 1:04:37) Appliance Temperature Sensing Devices & Technology (Length: 1:27:33) Voltage Measurements, Meters, Ghost Voltages, and Triac-controlled Neutrals (Length: 1:29:32) Troubleshooting with Tech Sheets, Part 1, 4/2016 (Length: 1:09:26) Troubleshooting with Tech Sheets, Part 2, 4/2016 (Length: 1:21:11) Tech Sheet Review, 4/9/2016: Bosch Speed Cooker, Amana Refrigerator, GE Glass Cooktop Range (Length: 1:22:58) Pulse Width Modulated (PWM) Switches used in Samsung Switched Mode Power Supplies (SMPS) (Length: 27:07) PWM Computer Cooling Fan in a Whirlpool Refrigerator (Length: 14:53) Understanding AC Split-phase Household Power Supplies (Length: 52:41) Troubleshooting a Samsung Electric Dryer without Disassembly using Live Tests and the Schematic (Length: 22:47) Troubleshooting a Bosch Dishwasher No-Heat Problem using the Schematic and Live Tests (Length: 15:38) Linear Motors and Linear Compressors (Length: 55:54) Bi-directional PSC Drive Motor Systems in Whirlpool VM Washers (Length: 56:52) Appliance Service Call Structure and Troubleshooting Strategies (Length: 1:00:16) The Ten Step Troubleshooting Tango and Workshop Exercises (Length: 1:35:39) Troubleshooting Ten-Step Tango Advanced Workshop (Length: 1:32:06) Ten-Step Tango Troubleshooting Workshop: Refrigerators (Length: 1:35:57) Whirlpool Duet Washer Schematic Analysis & Whirlpool Dryer Moisture Sensor System (Length: 1:03:04) Neutral Vs. Ground, Inverter Microwave, Digital Communications, Loading Down in DC loads, and more! (Length: 1:14:45) Gas Oven Service Call After a Parts Changing Monkey (Length: 36:04) AFCI and GFCI Circuit Protection Technology (Length: 41:26) Troubleshooting Samsung Refrigerators and more (Length: 1:29:58) 3-way Valves and Dual Evaporator Refrigerators (Length: 1:15:45) Split-Phase Compressors and PTC Start Devices (Length: 1:11:57) Gas Dryer Ignition Systems (Length: 53:50) Refrigerator Sealed System Thermodynamics, Part 1 (Length: 43:07) Refrigerator Sealed System Thermodynamics, Part 2 (Length 1:09:09) To access these webinars and all the other info-goodies here at Appliantology, become a Professional Appliantologist today. If you need cost-effective, time-flexible, state-of-the-art appliance technical training, check out the Master Samurai Tech Academy.
    • Samurai Appliance Repair Man

      [Webinar] Samurai's Sealed System Sleuthing Secrets - 10/30/2017 @7PM ET   10/19/2017

      Having laid some theoretical groundwork in the last webinar, we're going to focus on practical considerations in this one. That means quick n’ dirty techniques for diagnosing sealed system problem using strategically chosen and skillfully interpreted temperature measurements.  Review homework from the first session on 10-2-2017. Home refrigerator practical design and operating rules-of-thumb useful for troubleshooting Practical application exercises Troubleshooting scenario exercise Techniques for making system temperature measurements for determining superheat and subcooling Sealed system diagnosis homework assignment (to be reviewed in the next webinar in this series) If you attended the first webinar in this series, this is your payday! We’re going to apply that keen, penetrating insight you now possess into money- and time-saving shortcuts you can use to diagnose real-world refrigeration systems on service calls. See this calendar event for more details                   

Archived

This topic is now archived and is closed to further replies.

FivSpeed

Dehumidifier - Fedders

Recommended Posts

FivSpeed

First let me say, that about 6 months ago, with the advice and knowledge found at Fixitnow.com, and with parts from Repairclinic.com, my Jenn-aire side by side fridge/freezer is now defrosting and back to good again.  Yes, another adaptive defrost control module problem. Thank you all for so much for the help.

 

Your services (and parts?) are needed again with my almost new Fedders 45 pint, low temp, dehumidifier.  Model #A7DH45B2A.  Purchased about 6 months ago from a well known online auction place.  Sold to me as new, arrived quick but upon inspection realized with cosmetic flaws and a missing screw that the unit was used or refurbished.  I mention this so that you know that the unit maybe older than the 6 months that I have owned it.

Problem:  Ran good for 6 months.  Yesterday I noticed it wasn't on and pressed the power button.  It did not come on, like your average person, I pressed the on button a few more times...nothing.  Plugged it into another outlet and the power light button came on, but the unit wouldn't run.  Moved it to the garage and plugged it in again and the fan and compressor came on like the good old days.  Well, for about 10 seconds anyway.  Then the compressor shut off, fan still on.  At this point, the display flickers rapidly and the unit resets about every 2 seconds, but the compressor doesn't turn on.  If I unplug it and wait awhile the compressor and fan will turn on when I restart it.  I took off the plastic shrouding so I could see the fan and coils.  Waiting a few minutes and pressed the power button, compressor and fan came on, I start to almost immediately see a small amount of frost on the very bottom coil and the compressor kicks back off, fan still on.  As before the digital display starts to flicker and the unit keeps trying to reset.  I touch the coils above the frosty one and they are cold but not frosted.  I see two "motherboards", one for the display, one hiding beneath the shroud (where it use to be before I removed it).  On the formerly hidden motherboard I see a small  amount of corrosion on one of the little pieces attached to the motherboard  that I believe says defrost.  I brush it off with a clean paint brush.  My curiosity takes over and I unscrew the formerly hidden mortherboard and see more corrosion on the underneath side of the board.  The reason is that the board is laying in a small amount of water.  I dry off what I can and brush off some of the corrosion, but it doesn't seem to help.   I'm assuming my problems are coming from this motherboard.  Does anyone agree or have advice?  I noticed that repairclinic.com does not show a motherboard for this dehumidifier.  Can this dehumidifier be saved....for cheap?  Does anyone know where I can find this motherboard?

Any and all help is appreciated.  Dan.

 

 

Share this post


Link to post
Share on other sites

Need appliance parts? Call 877-803-7957 now!

applianceman18007260692

the only person that I know of that might could help would be a man  named emile in new orleans, that is if hurricane katrina didnt get him. 1-504-943-1661

Share this post


Link to post
Share on other sites
Jedi Appliance Guy

I have never seen the machine you are talking about but my hunch is it's cutting out on a low pressure switch.  You may be right but I wouldn't throw a hard to find board at it just yet.

Share this post


Link to post
Share on other sites